Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Sly_85819's avatar
Sly_85819
Icon for Nimbostratus rankNimbostratus
Mar 19, 2012

GTM topology on internal network

Hi,     I plan on doing proximity routing internally and thought of doing that via GTM. I configured topology on GTM and realized that the query originated from LDNS and not the actual client (n...
config
design
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Mar 21, 2012
Hi Sly,

 

 

I can't think of a reason you couldn't have clients query GTM directly. You'd just configure them with a listener IP that the GTMs answer on. GTM in v11.1 supports anycast:

 

 

GTM 11.1 release notes

 

http://support.f5.com/kb/en-us/products/big-ip_gtm/releasenotes/product/relnote-gtm-lc-11-1-0.htmlrn_new

 

 

IP Anycast

 

 

This release provides support for IP Anycast for DNS services on BIG-IP GTM. This configuration helps mitigate distributed denial-of-service attacks (DDoS), reduce DNS latency, improve the scalability of your network, and assist with global traffic management.

 

 

Configuring IP Anycast Route Health Injection

 

http://support.f5.com/kb/en-us/products/big-ip_gtm/manuals/product/gtm-implementations-11-1-0/11.html

 

 

Aaron